A congenital nevus is a proliferation of benign melanocytes that is either present at birth or develops shortly afterwards. Congenital nevi are usually classified by size: small (less than 1.5 cm in diameter), medium (larger than 1.5 cm and up to 20 cm) or giant (measuring 20 cm in diameter or larger).
Scoliosis is a common condition related to syringomyelia in children; in fact, some studies have shown that more than 50% of children with a syrinx have abnormal spinal curvature.coliosis can be caused by congenital conditions, neurological conditions (like SM), or can be of unknown origins. 80% of scoliosis cases have an unknown cause and are labeled idiopathic. Treatment options include observation, bracing, and surgery.
A scoliosis curve can be C- or S-shaped. In severe cases, the spine will rotate and twist, causing the ribs to stick out more on one side. Most cases of scoliosis are mild and cause no health problems. In severe cases, the twisting of the spine and ribs reduces space within the chest cavity. This can interfere with breathing and put strain on the heart. Untreated scoliosis can also compress and damage the spinal nerves, leading to paralysis.